How in IntelliJ IDEA to convert simple folder to web folder?

Question

How to create a Web folder in the IntelliJ IDEA project?

Answer 1

Go to menu

File -> Project Structure -> Modules -> Select your web facet -> Plus button

And here you can choose your folder and setup relative url where in your web app should be content of the folder.

Answer 2

You need to configure a web resource directory in the module Web facet settings.